340020443 has 4 divisors (see below), whose sum is σ = 388594800. Its totient is φ = 291446088.

The previous prime is 340020433. The next prime is 340020467. The reversal of 340020443 is 344020043.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340020443 - 2⁶ = 340020379 is a prime.

It is a super-2 number, since 2×340020443² = 231227803315832498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340020403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24287168 + ... + 24287181.

It is an arithmetic number, because the mean of its divisors is an integer number (97148700).

Almost surely, 2^340020443 is an apocalyptic number.

340020443 is a deficient number, since it is larger than the sum of its proper divisors (48574357).

340020443 is an equidigital number, since it uses as much as digits as its factorization.

340020443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48574356.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 340020443 is about 18439.6432449221. The cubic root of 340020443 is about 697.9671928981.

Adding to 340020443 its reverse (344020043), we get a palindrome (684040486).

The spelling of 340020443 in words is "three hundred forty million, twenty thousand, four hundred forty-three".